When was Zuishi Liu Yu a calligrapher? Is it famous?

Yuan dynasty. Liu Yu (1257~ 1308) was an innovator of Ming Dow in the early Yuan Dynasty. The word Yizhen is called Yuzhenzi. Nankang Jianchang (now Yongxiu County, Jiangxi Province) was born, and later he moved to Longxing New Building (now Nanchang, Jiangxi Province) with his father. Weak-crowned parents died one after another, and their families were poor and educated. Later, he was tired of the world and devoted himself to studying immortals. Hope to adopt!